Well, I went for it. I took $600 (20BB at 15/30) and called that my stop loss. My main concern was I didn't want to trash my ability to keep playing at the 5/10 level if the cards went south. While I play for fun, I have vowed that if my bankroll dries up, I'm done for life, so I'm very careful about level progression.

Worked out well in this case, I ended up +$1600 for the night (or about +53BB at 15/30).